Tiourarén Formation
The Tiourarén Formation is a geological formation in the Agadez Region of Niger whose strata were originally thought to be Early Cretaceous. However, re-interpretation of the sediments showed that they are probably Middle-Late Jurassic (Bathonian-Oxfordian) in age. It is the uppermost unit of the Irhazer Group. Dinosaur remains are among the fossils that have been recovered from the formation.
| Tiourarén Formation | |
|---|---|
| Stratigraphic range: | |
| Type | Geological formation |
| Unit of | Irhazer Group |
| Underlies | Tazolé Formation (Tegama Group) |
| Overlies | Irhazer Shale |
| Thickness | ~350 m (1,150 ft) |
| Lithology | |
| Primary | Siltstone, mudstone |
| Other | Sandstone, marl, limestone |
| Location | |
| Coordinates | 16.5°N 7.8°E |
| Approximate paleocoordinates | 8.2°N 2.5°E |
| Region | Agadez |
| Country | Niger |
| Extent | Iullemmeden Basin |
| Type section | |
| Named for | Tiourarén hill, Agadez |
Tiourarén Formation (Niger) | |
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